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Determining the nature of the faint X-ray source population near the Galactic Centre
Reba M. Bandyopadhyay, Andrew J. Gosling, Katherine M. Blundell +5
We present results of a multi-wavelength program to study the faint discrete X-ray source population discovered by Chandra in the Galactic Centre (GC). From IR imaging obtained wit…
Cosmological Implications of the Second Parameter of Type Ia Supernovae
Philipp Podsiadlowski, Paolo A. Mazzali, Pierre Lesaffre +2
Theoretical models predict that the initial metallicity of the progenitor of a Type Ia supernova (SN Ia) affects the peak of the supernova light curve. This can cause a deviation f…
The metallicity dependence of the long-duration GRB rate from host galaxy luminosities
Christian Wolf, Philipp Podsiadlowski
We investigate the difference between the host galaxy properties of core-collapse supernovae and long-duration gamma-ray bursts (LGRBs), and quantify a possible metallicity depende…
The (54Fe+58Ni)/56Ni ratio as a second parameter for Type Ia supernova properties
Paolo A. Mazzali, Philipp Podsiadlowski
A variation of the relative content of (54Fe+58Ni) versus 56Ni may be responsible for the observed scatter of Type Ia Supernovae (SNe Ia) about a mean relation between their intrin…
Double-core evolution and the formation of neutron-star binaries with compact companions
J. D. M. Dewi, Ph. Podsiadlowski, A. Sena
We present the results of a systematic exploration of an alternative evolutionary scenario to form double neutron-star binaries, first proposed by Brown (1995), which does not invo…
A single-degenerate model for the progenitor of the Type Ia supernova 2002ic
Zhanwen Han, Philipp Podsiadlowski
Supernova 2002ic was an atypical Type Ia supernova (SN Ia) with evidence for substantial amounts of hydrogen associated with the system. Contrary to previous claims, we show that i…
The C-flash and the ignition conditions of type Ia supernovae
P. Lesaffre, Z. Han, C. A. Tout +2
Thanks to a stellar evolution code able to compute through the C-flash we link the binary population synthesis of single degenerate progenitors of type Ia supernovae (SNe Ia) to th…
Constraints on SN Ia progenitor time delays from high-z SNe and the star formation history
F. Förster, C. Wolf, Ph. Podsiadlowski +1
We re-assess the question of a systematic time delay between the formation of the progenitor and its explosion in a type Ia supernova (SN Ia) using the Hubble Higher-z Supernova Se…